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Judgment method for motor vehicle driving state by applying intelligent cell phone

A technology of driving state and judgment method, applied in telephone communication, measuring devices, instruments, etc., can solve problems such as inaccurate results, reduce errors, improve accuracy, and improve customer experience

Inactive Publication Date: 2017-06-13
上海评驾科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantage of this method is that some brands of smartphones do not provide built-in algorithms to directly obtain linear acceleration, and this method gives inaccurate results in some cases

Method used

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  • Judgment method for motor vehicle driving state by applying intelligent cell phone
  • Judgment method for motor vehicle driving state by applying intelligent cell phone
  • Judgment method for motor vehicle driving state by applying intelligent cell phone

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Embodiment Construction

[0012] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0013] see Figure 1~2 , in an embodiment of the present invention, a method for judging the driving state of a motor vehicle using a smart phone, reads the acceleration values ​​in three directions under the mobile phone coordinate system through the G-sensor, and comprehensively considers the speed information read by the GPS module to determine Whether the motor vehicle is in an unstable acceleration process, an unstable deceleration process, or a very risk...

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Abstract

The invention discloses a judgment method for a motor vehicle driving state by applying an intelligent cell phone. Acceleration values of three directions under a cell phone coordinate system are read through a G-sensor, and speed information read by a GPS (Global Positioning System) module is comprehensively considered to judge whether a motor vehicle is at an unstable acceleration process, an unstable deceleration process and a sudden turning process with extremely great risks or not. According to the judgment method, GPS data and G-sensor data are fused to obtain more accurate acceleration and speed values and errors caused by sensor data are reduced. According to the judgment method, the intelligent cell phone does not need to be fixed on the motor vehicle and whether acceleration data fluctuation is caused when a user utilizes the cell phone or caused by risk driving behaviors can be distinguished; when the user utilizes the cell phone, analysis can also be carried out so that the customer experience is improved. According to a data analysis method and a driving behavior judgment model, the accuracy of recognizing the risk behaviors is improved.

Description

technical field [0001] The invention relates to a judging method, in particular to a method for judging the running state of a motor vehicle using a smart phone. Background technique [0002] At present, there is a new business model in the field of financial insurance, that is, Usage-Based Insurance (UBI for short) based on usage and driving behavior. The UBI solution based on the built-in G-sensor and GPS module of the smartphone is the lightest and easiest UBI solution for commercial promotion and operation. [0003] At present, a similar method is to judge sharp acceleration and deceleration events and sharp turn events by comprehensively using the G-sensor and magnetometer in the smartphone. This approach requires complex mathematical calculations, is inefficient, and uses too much memory. When the smart phone is not fixed on the motor vehicle, the interference signal generated by the use of the mobile phone will affect the accuracy of event judgment. The raw basic d...

Claims

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Application Information

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IPC IPC(8): G01C23/00H04M1/725
CPCG01C23/00H04M1/72403
Inventor 李献坤吕定海
Owner 上海评驾科技有限公司
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